单选题Just after stopping the engine while the oil is still circulating.Check that uniform oil jets appear from all the oil outlet grooves in the crosshead bearing lower shell and the guide shoes.The oil flow from （） must be compared from unit; there should be a similarity in the flow patterns.Athe piston cooling oil return pipesBthe main and crankpin bearingsCthrust and intermediate bearingsDstern tube and thrust bearings
单选题
Just after stopping the engine while the oil is still circulating.Check that uniform oil jets appear from all the oil outlet grooves in the crosshead bearing lower shell and the guide shoes.The oil flow from （） must be compared from unit; there should be a similarity in the flow patterns.
A
the piston cooling oil return pipes
B
the main and crankpin bearings
C
thrust and intermediate bearings
D
stern tube and thrust bearings
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